| 随机机翼结构阵风响应的分布函数及灵敏度分析 |
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| 引用本文： | 宋述芳,吕震宙,张伟伟,叶正寅.随机机翼结构阵风响应的分布函数及灵敏度分析[J].航空学报,2011,32(10):1770-1777. |
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| 作者姓名： | 宋述芳 吕震宙 张伟伟 叶正寅 |
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| 作者单位： | 1. 西北工业大学航空学院,陕西西安,710072
2. 西北工业大学翼型叶栅空气动力学国家重点实验室,陕西西安,710072 |
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| 基金项目： | 国家自然科学基金(50875213); 航空科学基金(2009ZA53009); 西北工业大学基础研究基金(JC20100201)~~ |
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| 摘 要： | 随机结构在随机激励作用下的结构响应具有随机不确定性,响应的分布函数(CDF)能够充分地体现响应量分布变化规律,只要掌握了响应的CDF,就可以进一步掌握响应的统计信息.基于响应的CDF,对基本变量的分布参数进行灵敏度分析,可以表明基本变量的随机不确定性对输出响应的随机不确定性的影响程度,从而清楚地表明重要随机变量和非重要...
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| 关 键 词： | 分布函数 灵敏度 近似解析法 Monte Carlo模拟 分层线抽样法 阵风响应 翼根弯矩 |
| 收稿时间： | 2010-12-28; |
Analysis of CDF and Sensitivity of Gust Response of Stochastic BAH Wing Structure |
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| SONG Shufang,LU Zhenzhou,ZHANG Weiwei,YE Zhengyin.Analysis of CDF and Sensitivity of Gust Response of Stochastic BAH Wing Structure[J].Acta Aeronautica et Astronautica Sinica,2011,32(10):1770-1777. |
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| Authors: | SONG Shufang LU Zhenzhou ZHANG Weiwei YE Zhengyin |
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| Institution: | SONG Shufang1,LU Zhenzhou1,ZHANG Weiwei2,YE Zhengyin2 1.School of Aeronautics,Northwestern Polytechnical University,Xi'an 710072,China 2.National Key Laboratory of Science and Technology on Aerodynamic Design and Research,China |
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| Abstract: | Uncertainty of structural parameters will lead to the uncertainty of responses of stochastic structures with stochastic excitation.The cumulative distribution function(CDF) of the response can adequately reflect the response quantity distribution.Once the CDF of the response is mastered,its statistical information may be further grasped.A sensitivity analysis of the distributed parameters of the basic variable based on the CDF of response may indicate its influence on the stochastic uncertainty of the outpu... |
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| Keywords: | cumulative distribution function sensitivity approximate analytical method Monte Carlo simulation stratified line sampling gust response root bending moment |
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